Refrigerating Cycle - LG GR-532 Service Manual

M General Control of Refrigerating Cycle
NO. ITEMS
WELDING (1) H 30
ROD (1)
(1) •
(1)
(2) Bcup-2
1
(1)
(1) •
(1) •
(1) •
(1)
FLUX (1)
(1)
(1)
2
(1) •
(1) •
(1) •
(1) •
DRIER (1) Assemble the drier within 30min.
ASM (1)
3
(2) Keep the unpacked drier at the temperature
VACUUM (1) When measuring with pirant Vacuum
(1
(1
(2) If the vacuum degree of the cycle inside is
(2)
(2)
4
(2)
(3) Vacuum degree of vacuum pump must be
(3)
(4) Vacuum degree must be same to the
DRY AND
(1) The pressure of dry air must be more
AIR
NITROGEN
(2) Temperature must be more than
5
GAS
(3) Keep the pressure to 12~6Kg/cm
(3)
NIPPLE (1) Check if gas leaks with soapy water.
6 AND (2) Replace Quick Coupler in case of leakage.
COUPLER
PIPE (1)• Put all Joint Pipe in a clean box and
7
(1)•
(1)•
CONTENTS AND SPECIFICATIONS
• Chemical Ingredients
Ag: 30%, Cu: 27%, Zn: 23%, Cd: 20%
• Brazing Temperature: 710~840°C
• Chemical Ingredients
Cu: About 93%
P: 6.8~7.5%
The rest: within 0.2%
• Brazing Temperature: 735~840°C
• Ingredients and how to make
••Borax 30%
••Borax 35%
Fluoridation kalium: 35%
Water: 4%
Mix the above ingredients and boil until
they are transformed into liquid.
after unpacking.
of 80~100°C.
)gauge of charging M/C, vacuum
)degree is within 1 Torr.
10 Torr. below for low pressure and 20 Torr.
for high pressure, it says no vacuum
leakage state.
0.05 Torr. below after 5 min.
value described item (2) above for more than
20 min.
han 12~16Kg/cm
2
-20~-70°C.
when substituting dry air for Nitrogen Gas.
cover tightly with the lid so that dust or
humidity is not inserted.
• Recommend H34 containing 34% Ag in the
• Service Center.
• Make amount for only a day.
• Holding period: 1 day
• Close the cover of container to prevent dust
• putting in the FLUX.
• Keep it in a stainless steel container.
• Don't keep the drier in a outdoor because
• humidity damages to it.
• Apply M/C Vacuum Gauge without fail.
• Perform vacuum operation until a proper
• vacuum degree is built up.
• If a proper vacuum degree isn't built
• check the leakage from
• the Cycle Pipe line part and
• Quick Coupler Connecting part.
also
2
• Check if gas leaks from connecting part of
• Coupler.
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REMARKS
( 1 )
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